Question

Identify odd one out according to types of indicator 1 litmus 2 methyl orange 3 phenolphtbalein

Answer 1

Phenothalein, Unlike Litmus paper and Methyl Orange, it is most suitable for use of measuring substances of high hydrogen content ( strong acids and bases).

Answer 2

" 3 "

Explanation :

1 and 2 are natural acid base indicator while, 3 is man made avid base indicator. So, it is out.